Henderson is located close to the center of New York. Henderson is part of Jefferson County. Henderson has 0.51 square miles of land area and has no water area. As of 2010-2014, the total Henderson population is 184. Henderson median household income is $23,750 in 2010-2014. Henderson median house value is $101,700 in 2010-2014. On average, the public school district that covers Henderson is close to the state average in quality. The Henderson area code is 315.